Gastric cancer is a kind of malignant tumor of digestive system which is relatively common in clinic, and there is no special manifestation of gastric cancer one month before death, and the main symptoms are abdominal pain, indigestion and endocrine disorders, etc. Especially one month before death, it is easy to vomit blood and even black stools, and when the amount of vomiting is large, it is easy to cause anemia or hemorrhagic shock. In serious cases, the symptoms of jaundice may appear due to anemia or metastasis in liver, and the patient will be emaciated, fatigue as well as multi-organ failure, which will turn sharply and easily lead to multi-organ failure with symptoms of hepatic coma and so on. These are the symptoms of advanced stomach cancer one month before death, which may be accompanied by other symptoms, such as mental consciousness disorder, which may be caused by brain metastasis of stomach cancer, therefore, these symptoms must be cautious, which may jeopardize the life at any time.